Anti-stripping water collecting pipe device of finishing mill and cooling system thereof
By optimizing the nozzle arrangement of the anti-stripping water manifold device in the finishing mill, the problems of uneven water distribution and interference caused by unreasonable nozzle arrangement were solved, and the uniform distribution of sprayed water and the improvement of cooling and lubrication effects were achieved.
Patent Information
- Application Number
- CN202520295463.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In the existing anti-stripping water manifold device for finishing mills, the unreasonable arrangement of nozzles leads to uneven water distribution and interference between adjacent nozzles, affecting the cooling and lubrication effects.
Design a finishing mill anti-stripping water manifold device, including an upper anti-stripping water manifold and a lower anti-stripping water manifold. Optimize and adjust the angle between the nozzle head and the main manifold and the spray direction to ensure that the sprayed watermark is non-interfering and evenly distributed. Adjust the nozzle arrangement on the roll gap lubrication manifold to deflect to one side to avoid interference.
This achieves a uniform distribution of sprayed water, reduces interference between adjacent nozzles, improves cooling and lubrication, and ensures uniform cooling and lubrication of the work roll surface.
Smart Images
Figure CN223888712U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot-rolled strip steel rolling technology, and in particular to a finishing mill anti-stripping water manifold device and its cooling system. Background Technology
[0002] As an important step in steel production, hot rolling is a key step in converting steel billets into hot-rolled coils or hot-rolled plates. In the hot rolling production of CSP thin slabs, the first few stands of the finishing mill, such as the F1-F4 stands, cool the surface of the billet before the steel strip bites in. This ensures that the surface of the billet has sufficient temperature drop and ensures the uniformity of oxide film peeling off the surface of the work rolls that are in contact with the billet surface. The water used in this process is called roll gap cooling water (commonly known as anti-peeling water).
[0003] In CSP production, the water-cutting plate (made of polymer) located on the upper part of the inlet side of the frame rubs against the work roll during use, resulting in a maximum wear of about 20mm in the lateral direction. Since this device is mechanically assembled with the anti-stripping water manifold on the inlet side, this wear will affect the position of the manifold and the spray position of the nozzle. When the wear reaches a certain level, such as 15mm in the lateral direction, the anti-stripping water will be sprayed onto the surface of the work roll instead of the slab surface, causing uneven temperature reduction on the surface of the work roll while the surface of the slab is not cooled.
[0004] In the existing technology, the nozzle arrangement in the anti-stripping water manifold device of the CSP hot continuous rolling mill is unreasonable, resulting in uneven water distribution. For example, in the design of the anti-stripping water manifold on the inlet side of a certain CSP production line, the same nozzles with a spray angle of 60 degrees are arranged on it, and the spray watermarks of adjacent nozzles interfere with each other when spraying.
[0005] In addition, in CSP hot continuous rolling production, the first few stands of the finishing mill, such as stands F1-F6, are equipped with roll gap lubrication manifolds on the upper and lower sides of each stand's entrance side to reduce rolling force and avoid excessive contact between the strip and the work rolls, which could cause the roll temperature to rise. The purpose of these manifolds is to evenly spray the prepared lubricating oil onto the surface of the work rolls, thereby lubricating the rolling process. In CSP production, the nozzles on the roll gap lubrication manifolds are arranged in a figure-eight pattern, with the left nozzle deflected 15 degrees to the left and the right nozzle deflected 15 degrees to the right. There is significant interference between the spray from the two middle nozzles.
[0006] In addition, the nozzle arrangement on the existing roll gap lubrication manifold does not take into account the water distribution along the length of the work roll surface, resulting in an excessive difference between the maximum and minimum water volume, which can easily cause fluctuations in the lubrication effect. Utility Model Content
[0007] The main purpose of this utility model is to provide a finishing mill anti-stripping water manifold device and its cooling system, which aims to reduce interference between adjacent nozzles.
[0008] To achieve the above objectives, this utility model provides a finishing mill anti-stripping water manifold device, comprising an upper anti-stripping water manifold and a lower anti-stripping water manifold, wherein...
[0009] The upper anti-stripping water manifold includes a first manifold main pipe and a first inlet pipe and multiple first branch pipes connected thereto. The first branch pipe includes a first straight pipe section, a first bend pipe section, a second straight pipe section, a second bend pipe section and a third straight pipe section arranged in sequence. A first nozzle head is installed at the outlet end of the third bend pipe section. The angle between the axes of the first straight pipe section and the second straight pipe section is 60°~70°. The angle between the spray direction of the first nozzle head and the axis of the third straight pipe section is 25°~35°.
[0010] The lower anti-stripping water manifold includes a second main manifold, a second inlet pipe connected thereto, and multiple second branch pipes. The second branch pipes include a fourth straight pipe section, a third bend pipe section, a fifth straight pipe section, a fourth bend pipe section, and a sixth straight pipe section arranged in sequence. A second nozzle head is installed at the outlet end of the sixth straight pipe section. The angle between the axes of the fourth and fifth straight pipe sections is 40°~50°, and the angle between the spray direction of the second nozzle head and the axis of the sixth straight pipe section is 20°~30°.
[0011] Preferably, the distance between the axes of the first nozzle heads of two adjacent first branch pipes is 110mm to 120mm.
[0012] Preferably, the distance between the axes of the second nozzle heads of two adjacent second branch pipes is 110mm to 120mm.
[0013] Preferably, the length of the third straight pipe section is 55mm to 65mm.
[0014] Preferably, plugs are installed at both ends of the first and second manifold main pipes, welding bases and fixing nuts are installed on the first and second nozzle heads, and mounting flanges are fixed at the ends of the first and second water inlets.
[0015] Preferably, the anti-stripping water manifold device for the finishing mill further includes a lubrication manifold located at the roll gap of the finishing mill stand. The lubrication manifold is provided with multiple third nozzles, and the deflection direction of the multiple third nozzles is arranged towards the same side.
[0016] Preferably, the axes of all the third nozzle heads are arranged in parallel.
[0017] Preferably, there are 12 to 14 third nozzle heads.
[0018] Preferably, the distance between the axes of two adjacent third nozzle heads is 112mm to 116mm.
[0019] This utility model also proposes a cooling system for a finishing mill, including the aforementioned anti-stripping water manifold device for the finishing mill, and a cooling water supply system connected to the anti-stripping water manifold device for the finishing mill.
[0020] The anti-stripping water manifold device for finishing mills proposed in this utility model overcomes the shortcomings of the original anti-stripping water manifold by adjusting its structure to ensure uniform water distribution during nozzle spraying. The water spray patterns from adjacent nozzles or nozzles in the same row overlap without interference, while also ensuring more uniform water distribution along the length of the work roll. Furthermore, this anti-stripping water manifold device for finishing mills has the advantages of simple structure, stable and reliable operation, and low modification cost. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the upper anti-stripping water manifold in the anti-stripping water manifold device for finishing mills of this utility model;
[0022] Figure 2 This is a diagram of the spray watermark formed by the upper anti-stripping water manifold in the anti-stripping water manifold device of the finishing mill of this utility model;
[0023] Figure 3 This is a water distribution diagram of the upper anti-stripping water manifold in the anti-stripping water manifold device for finishing mills of this utility model;
[0024] Figure 4 This is a schematic diagram of the lower anti-stripping water manifold in the anti-stripping water manifold device for finishing mills of this utility model;
[0025] Figure 5 This is a diagram of the spray watermark formed by the lower anti-stripping water manifold in the anti-stripping water manifold device of the finishing mill of this utility model;
[0026] Figure 6 This is a water distribution diagram of the lower anti-stripping water manifold in the anti-stripping water manifold device for finishing mills of this utility model;
[0027] Figure 7 This is a schematic diagram of the lubrication manifold in the anti-stripping water manifold device for a finishing mill according to this utility model;
[0028] Figure 8 This is a diagram of the spray watermark formed in the lubrication manifold of the anti-stripping water manifold device for a finishing mill according to this utility model.
[0029] In the diagram, 1-first inlet pipe, 2-first straight pipe section, 3-first bend pipe section, 4-second straight pipe section, 5-second bend pipe section, 6-third straight pipe section, 7-first nozzle head, 8-first manifold main pipe, 10-second manifold main pipe, 11-second inlet pipe, 12-fourth straight pipe section, 13-third bend pipe section, 14-fifth straight pipe section, 15-fourth bend pipe section, 16-sixth straight pipe section, 17-second nozzle head, 18-mounting flange, 19-third nozzle head.
[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0032] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] This utility model proposes a water collection device for preventing stripping in a finishing mill.
[0034] Reference Figure 1 and Figure 4 In this embodiment, a finishing mill anti-stripping water manifold device includes an upper anti-stripping water manifold and a lower anti-stripping water manifold, wherein...
[0035] The upper anti-stripping water manifold includes a first main manifold 8 and a first inlet pipe 1 connected thereto, and multiple first branch pipes. The first branch pipes include a first straight pipe section 2, a first bend pipe section 3, a second straight pipe section 4, a second bend pipe section 5, and a third straight pipe section 6 arranged sequentially. A first nozzle head 7 is installed at the outlet end of the third bend pipe section 13. The included angle between the axes of the first straight pipe section 2 and the second straight pipe section 4 is 60°~70°. Figure 1 (Taking 65° as an example for specific explanation), the angle between the spray direction of the first nozzle head 7 and the axis of the third straight pipe section 6 is 25°~35°. Figure 1 (Using 30° as an example for specific explanation)
[0036] The lower anti-stripping water manifold includes a second main manifold 10, a second inlet pipe 11 connected to it, and multiple second branch pipes. Each branch pipe includes a fourth straight pipe section 12, a third bend pipe section 13, a fifth straight pipe section 14, a fourth bend pipe section 15, and a sixth straight pipe section 16 arranged sequentially. A second nozzle head 17 is installed at the outlet end of the sixth straight pipe section 16. The included angle between the axes of the fourth straight pipe section 12 and the fifth straight pipe section 14 is 40°~50°. Figure 4 (Taking 45° as an example for specific explanation), the angle between the spray direction of the second nozzle head 17 and the axis of the sixth straight pipe section 16 is 20°~30°. Figure 4 (Using 25° as an example for specific explanation).
[0037] In this embodiment, the angle between the axes of the first straight pipe section 2 and the second straight pipe section 4 is 60°~70°, and the angle between the spray direction of the first nozzle head 7 and the axis of the third straight pipe section 6 is 25°~35°. This takes into account the influence of the lateral wear of the water-cutting plate on the inlet side on the spray position of the nozzle on the anti-stripping water manifold on the inlet side, ensuring that even under the condition of maximum lateral wear of the water-cutting plate, the anti-stripping water is only sprayed onto the surface of the billet and not the surface of the work roll.
[0038] The angle between the axes of the fourth straight pipe section 12 and the fifth straight pipe section 14 is 40°~50°, and the angle between the spray direction of the second nozzle head 17 and the axis of the sixth straight pipe section 16 is 20°~30°. The influence of the lateral wear of the water-cutting plate on the inlet side on the spray position of the nozzle on the anti-stripping water manifold is taken into account, so as to ensure that even under the condition of maximum lateral wear of the water-cutting plate, the nozzle on the anti-stripping water manifold only sprays onto the surface of the billet and not the surface of the work roll.
[0039] Furthermore, the distance between the axes of the first nozzle heads 7 of two adjacent first branch pipes is 110mm~120mm. In this embodiment, 115mm is used as an example for specific explanation. Correspondingly, the spacing of the holes on the fixing plate used to install the upper and lower anti-stripping water manifolds is also adjusted accordingly to ensure the normal installation of the manifolds with uniform spacing after adjustment. By adopting this size setting, it is ensured that the water volume distribution during nozzle spraying is uniform, and the spray water marks of two adjacent first nozzle heads 7 or the same row of first nozzle heads 7 overlap without interference. Figure 2 and 3 As shown.
[0040] Furthermore, the distance between the axes of the second nozzle heads 17 of two adjacent second branch pipes is 110mm~120mm. In this embodiment, 115mm is used as an example for specific explanation. This size setting ensures that the water distribution during nozzle spraying is uniform, and the water spray patterns of adjacent second nozzle heads 17 or second nozzle heads 17 in the same row overlap without interference. Figure 5 and 6 As shown.
[0041] In this embodiment, the length of the third straight pipe section 6 is 55mm~65mm, thereby preventing interference between the third nozzle head 19 installed on the manifold and the inlet side steel conveying roller and the working roller.
[0042] Specifically, plugs are installed at both ends of the first manifold main pipe 8 and the second manifold main pipe 10, welding bases and fixing nuts are installed on the first nozzle head 7 and the second nozzle head 17, and mounting flanges 18 are fixed at the ends of the first water inlet pipe 1 and the second water inlet pipe 11.
[0043] Reference Figure 7 The anti-stripping water manifold device for this finishing mill also includes a lubrication manifold located at the roll gap of the finishing mill stand. The lubrication manifold is equipped with multiple third nozzle heads 19, all of which are oriented towards the same side. In this embodiment, the nozzle arrangement on the upper and lower lubrication manifolds of the inlet side roll gap is adjusted, changing the original figure-eight nozzle arrangement to a nozzle arrangement deflected to one side. This ensures that the water spray marks from adjacent nozzles overlap without interference along the length of the work roll body, resulting in a more uniform water distribution along the length of the work roll body, as follows: Figure 8 As shown.
[0044] Furthermore, the axes of all the third nozzle heads 19 are arranged in parallel. There are 12 to 14 third nozzle heads 19. The distance between the axes of two adjacent third nozzle heads 19 is 112mm to 116mm. The figure shows a specific example with a distance of 114mm.
[0045] The anti-stripping water manifold device for finishing mills proposed in this embodiment overcomes the shortcomings of the original anti-stripping water manifold by adjusting its structure to ensure uniform water distribution during nozzle spraying. The water spray patterns from adjacent nozzles or nozzles in the same row overlap without interference, while also ensuring more uniform water distribution along the length of the work roll. Furthermore, this anti-stripping water manifold device for finishing mills has the advantages of simple structure, stable and reliable operation, and low modification cost.
[0046] This utility model further proposes a cooling system for a finishing mill.
[0047] In this preferred embodiment, a finishing mill cooling system includes a finishing mill anti-stripping water manifold device and a cooling water supply system connected to the finishing mill anti-stripping water manifold device. The specific structure and beneficial effects of the finishing mill anti-stripping water manifold device are as described in the above embodiments and will not be repeated here.
[0048] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A finishing mill anti-stripping water manifold device, characterized in that, Includes upper anti-stripping water manifold and lower anti-stripping water manifold, among which, The upper anti-stripping water manifold includes a first manifold main pipe and a first inlet pipe and multiple first branch pipes connected thereto. The first branch pipe includes a first straight pipe section, a first bend pipe section, a second straight pipe section, a second bend pipe section and a third straight pipe section arranged in sequence. A first nozzle head is installed at the outlet end of the third bend pipe section. The angle between the axes of the first straight pipe section and the second straight pipe section is 60°~70°. The angle between the spray direction of the first nozzle head and the axis of the third straight pipe section is 25°~35°. The lower anti-stripping water manifold includes a second main manifold, a second inlet pipe connected thereto, and multiple second branch pipes. The second branch pipes include a fourth straight pipe section, a third bend pipe section, a fifth straight pipe section, a fourth bend pipe section, and a sixth straight pipe section arranged in sequence. A second nozzle head is installed at the outlet end of the sixth straight pipe section. The angle between the axes of the fourth and fifth straight pipe sections is 40°~50°, and the angle between the spray direction of the second nozzle head and the axis of the sixth straight pipe section is 20°~30°.
2. The anti-stripping water manifold device for a finishing mill as described in claim 1, characterized in that, The distance between the axes of the first nozzles of two adjacent first branch pipes is 110mm~120mm.
3. The anti-stripping water manifold device for finishing mills as described in claim 1, characterized in that, The distance between the axes of the second nozzle heads of two adjacent second branch pipes is 110mm~120mm.
4. The anti-stripping water manifold device for finishing mills as described in claim 1, characterized in that, The length of the third straight pipe section is 55mm~65mm.
5. The anti-stripping water manifold device for a finishing mill as described in any one of claims 1 to 4, characterized in that, Both ends of the first and second manifold main pipes are equipped with plugs, and the first and second nozzle heads are equipped with welding bases and fixing nuts. The ends of the first and second water inlets are fixed with mounting flanges.
6. The anti-stripping water manifold device for a finishing mill as described in claim 1, characterized in that, It also includes a lubrication manifold located at the roll gap of the finishing mill stand, the lubrication manifold being equipped with multiple third nozzle heads, the deflection direction of the multiple third nozzle heads being set toward the same side.
7. The anti-stripping water manifold device for a finishing mill as described in claim 6, characterized in that, The axes of all the third nozzle heads are arranged in parallel.
8. The anti-stripping water manifold device for a finishing mill as described in claim 6, characterized in that, There are 12 to 14 third nozzle heads in total.
9. The anti-stripping water manifold device for a finishing mill as described in claim 6, characterized in that, The distance between the axes of two adjacent third nozzle heads is 112mm~116mm.
10. A cooling system for a finishing mill, characterized in that, The device includes the anti-stripping water manifold for finishing mills as described in any one of claims 1 to 9, and further includes a cooling water supply system connected to the anti-stripping water manifold for finishing mills.